I know I could resolve the problem easily with Red5 Media Server. I'm just curious, since I need a node server anyway and wondered if I can bypass Red5. Using the HTML5 camera api is not an option since I target up to four cameras at the same time.
I didn't see anything specific for Node.js to work with webcams. However, I saw this solution online which uses JavaScript, NodeJs, HTML5 (canvas) and WebSockets mainly to achieve frames out of video streaming then it uses the websockets to transfer the image into HTML5 canvas using NodeJs as an intermediary server.
hope it helps.